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Message-ID: <20110627213739.GA12592@brightrain.aerifal.cx>
Date: Mon, 27 Jun 2011 17:37:39 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: Anti-bloat side project
On Mon, Jun 27, 2011 at 11:38:05PM +0200, Szabolcs Nagy wrote:
> * Rich Felker <dalias@...ifal.cx> [2011-06-27 17:19:09 -0400]:
> > Bleh. Has there been any serious work to document the causes and how
> > the code could be changed to fix the syscall bloat though? Or just
> > preliminat strace and wc -l?
>
> most of the syscalls are due to python module imports check
> 100 different locations before finding the good one
>
> imho they measured it and concluded that with modern
> filesystem caching this does not matter much..
Well they're wrong. Even if the syscall did nothing but enter and
leave kernelspace, it would still be very expensive. Using a module
cache/registry of some sort could solve the problem, or they could
first tackle all the non-open() syscalls which still make up a heavy
share of the cost..
Rich
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